> what is the difference between the two ways of assigning the list? > p=a vs. p=a[:]
The first makes p point at the same list as a. The second makes p point at a *copy* of the list pointed to by a. You will see the difference if you try to modify the lists after assignment. In the first case modifying either variable will affect both variables values. In the second changing p will not affect a. This is one of the common 'gotchas' of Python programjming. Alan G Author of the learn to program web tutor http://www.freenetpages.co.uk/hp/alan.gauld _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
